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Pyrofer said in July 8th, 2011 at 8:56 AM

Just curious why you didnt get an SMD version of that PIC?
A Lot smaller without all the work…
Also, I would have gone for a single CR2032 battery, the 3v lights most leds quite well.

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Andrey Mikhalchuk said in July 20th, 2011 at 9:41 PM

Pyrofer,

thanks for the suggestions.
- I decided to go with PDIP because it is easier to solder and it can be used with the breadboard. I wanted this project require as few skills as possible and soldering a SOIC could be a challenge for beginners. Another thing one can do is use SMD LEDs, they are also much smaller but, again, they are more difficult to solder.
- CR2032 is just too large for the locket I used. Even CR1620 didn’t fit inside. It’s a good choice for larger jewelry though.

Andrey